EP 4327136 A1 20240228 - THROUGH TUBING NEAR-FIELD SONIC MEASUREMENTS TO MAP OUTER CASING ANNULAR CONTENT HETEROGENEITIES
Title (en)
THROUGH TUBING NEAR-FIELD SONIC MEASUREMENTS TO MAP OUTER CASING ANNULAR CONTENT HETEROGENEITIES
Title (de)
NAHFELDSCHALLMESSUNGEN DURCH ROHRE ZUR ABBILDUNG VON HETEROGENITÄTEN DES RINGFÖRMIGEN ÄUSSEREN GEHÄUSEINHALTS
Title (fr)
MESURES SONIQUES EN CHAMP PROCHE DE COLONNE DE PRODUCTION POUR LA CARTOGRAPHIE D'HÉTÉROGÉNÉITÉS DE CONTENU ANNULAIRE DE TUBAGE EXTERNE
Publication
Application
Priority
- US 202163176947 P 20210420
- US 2022025566 W 20220420
Abstract (en)
[origin: US2022334284A1] Aspects described herein provide for methods and apparatus for characterizing azimuthal heterogeneities in a barrier installed outside an outer casing in a borehole traversing a formation in a cased hole configuration including an inner and outer casing. The approach is based on specific attributes in sonic signals acquired with an azimuthal and axial array receiver system located inside the inner casing. The methods include slowness-time-coherence (STC) processing based on specific arrivals identified in data acquired by axial arrays associated with multiple azimuthal sections of the receiver system. The specific arrivals contain STC signatures that can be examined in terms of coherence amplitude and localization within STC maps. Based on specific attributes in the sonic signals, an azimuthal coverage of the outer casing annular contents can be created.
IPC 8 full level
G01V 1/46 (2006.01); E21B 47/14 (2006.01); G01V 1/50 (2006.01)
CPC (source: EP US)
E21B 47/005 (2020.05 - EP); E21B 47/107 (2020.05 - EP); G01V 1/50 (2013.01 - US); G01V 2210/74 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
US 12000973 B2 20240604; US 2022334284 A1 20221020; CA 3217355 A1 20221027; EP 4327136 A1 20240228; WO 2022226082 A1 20221027
DOCDB simple family (application)
US 202217659913 A 20220420; CA 3217355 A 20220420; EP 22792421 A 20220420; US 2022025566 W 20220420